X0306 4 2022-06-08 0 0001590750 Viridian Therapeutics, Inc.\DE VRDN 0001663607 Harwin Peter Evan C/O VIRIDIAN THERAPEUTICS, INC. 221 CRESCENT STREET, SUITE 401 WALTHAM MA 02453 1 0 0 0 Stock Option (Right to Buy) 12.31 2022-06-08 4 A 0 12500 0.00 A 2032-06-08 Common Stock 12500 12500 I See footnote The option vests in full upon the earlier to occur of (i) June 8, 2023 or (ii) the Issuer's 2023 annual meeting of stockholders, subject to Reporting Person's continued service on the Board. Under the Reporting Person's arrangement with Fairmount Funds Management LLC (the "Adviser"), the Reporting Person holds the option for one or more investment vehicles managed by the Adviser (each, a "Fairmount Fund"). The Reporting Person is obligated to turn over to the Adviser any net cash or stock received from the option for the benefit of such Fairmount Fund. The Reporting Person therefore disclaims beneficial ownership of the option and underlying common stock. /s/ Lara Meisner, Attorney-in-Fact for Peter Evan Harwin 2022-06-10